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math.GN2010★ 1 cited
Noetherian type in topological products
Menachem Kojman, David Milovich, Santi Spadaro
The cardinal invariant "Noetherian type" of a topological space (Nt(X)) was introduced by Peregudov in 1997 to deal with base properties that were studied by the Russian School…
math.GN2001
Van der Waerden spaces and Hindman spaces are not the same
Menachem Kojman, Saharon Shelah
A Hausdorff topological space X is van der Waerden if for every sequence (x_n)_n in X there is a converging subsequence (x_n)_{n in A} where subset A of omega contains arithmetic p…